Boiler-furnace



2 Sheets Sheet 1.

(No Model.)

E. REYNOLDS. BOILER FURNAGE.

Patented Oct. 18, 1892.

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2 Sheets Sheet 2.

(No Model) E. REYNOLDS.

BOILER PURNAGE.

Patented Oet. 18, 1892..

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` UNITED STATES PATENT OFFICE.

EDI/VIN REYNOLDS, OF MILWAUKEE, WISCONSIN.

BOlLER-FURNACE.

SPECIFICATION forming part of Letters Patent No. 484,507, dated October 18, 1892.

Application filed May 14, 1892.

To a/ZI, whom it may concern:

Be it known that I, EDWIN REYNOLDS, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee andState of Wisconsin, have invented certain new and useful Improvements in Boiler-Furnaces, of which the following is a specification.

My invention relates to boiler-furnaces; and it consists in various features and details hereinafter set forth and claimed.

In the drawings, Figure l is. a horizontal sectional view on the line l l of Figs. 2 and and 4; Fig. 2, avertical sectional View on the line 2 2 of Figs. l and 3; Fig. 3, a horizontal sectional view on the line 3 3 of Figs. 2 and 4, and Fig. 4 a vertical sectional view `on the line 4 4 of Fig. 3.

The object of the present invention is to secure a complete consumption of the fuel and those products of combustion which usually pass o in an unconsumed condition.

The invention is applicable to both vertical and horizontal boilers, although I have shown it in connection with only the vertical style of boiler.

In carrying out my invention I construct the furnace with two fire-chambers separated by a suitable partition or wall, said chambers communicating at their upper ends with or opening into a common combustion-chamber. In the walls of these two fire-chambers I form a series of ducts, flues, channels, or passages adapted to receive air and discharge the same in a heated condition at the tops of the {irechambers, Whereby not only is the combustion promoted, but the the furnace-walls are prevented from becoming unduly heated and burning out. The walls of the lire-chambers, except the division wall or partition, preferably converge, so as to form a somewhat-contracted throat at the point at which the heated air-currents are discharged, while the combustion space or chamber immediately above is enlarged, so as to give the gases, &c., a chance to expand and distribute themselves over as large a boiler-surface as is possible. These features will be better understood upon referring to the drawings, in which- A represents a boiler, which may be of any desired type or style, andB the furnace. The furnace B comprises the two fire-chambers a.

Serial No. 433,037. (No model.)

and a', each having a grate b, a fuel-supply c, and a draft-door d, as usual. These two lirechambers a and a are separated by an upright partition or division wall O, which extends upward nearly to the base-plate of the boiler, as shown in Figs. 2 and 4. This partion-wall is made hollow or provided with a flue e, which latter is provided near its upper end with outlets or openings f, which are designed to discharge the air from both sides of said partition, the lower end of the fiuee communicating with one branch of the main airsupply iiue or passage D, formed in the body of the masonry of the furnace and extending therearound, as shown. The main air-supply flue or passage D receives its supply of air through the openings E, formed in the front wall of the furnace, as indicated by the dotted lines in Fig. 3.

The side walls g g and the front and rear walls h and c' of the tire-chambers converge at their upper ends, so as to form a somewhatcontracted throat, through which the products pass into the combustion-chamber F, as shown in Figs. 2 and 4. In the side Wallsg gI form a flue or passage j, which communicates at its lower end with a branch of the main supply-due D, but which is provided at its upper end with outlets or openings 7c, through which the heated air is discharged inward over the top part of the tire-chambers. Front wall 7L is likewise provided with a ue or passage Z (communicating with due D) and outlets m, While the rear wall t' is provided with a similar flue n and outlets 0.

Upon reference to Fig. 3 it willbe observed that the openings or outlets f, lo, m, and care all practically in the same horizontal plane at the top of the fire-chambers orin the throat between the nre-chambers and the combustion-chamber. Consequently there will be distributed from three sides of each fire-chamber a large number of streams of heated air, which, mingling with the gases, &c., rising from the fires, will aid the proper combustion of such gases and avoid smoke.

The use of the partition-wall C permits of alternate firing and the keeping of a wellburning fire on one side at all times. The

flames, 85e., from one chamber mingling with the gases from the freshlycoaled lire in the other chamber in the combustion-chamber above will, with the aid of the air-jets, burn them, so as to avoid smoke. This center wall or partition furnishes a large amount of heating-surface for the airwhich passes up th rough the iiue e.

A cross-bar G extends transversely across each fire-chamber at the upper end, which, in connection with the upright partition, directs the gases, &c., into four iiues in which heated air is admitted on three sides of each flue, besides tending to brace .or support the upper end of the division-wall.

Having thus described my invention, what 1.. In' a boiler-furnace, two` tire-chambers separated by an upright division-wall, said wall being provided with an internal vertical air-line e and with a series of lateral openings f on both sides thereof throughout the length ofthe wall, all substantially as shown and described. i

2. Y In a boiler-furnace, two tire-chambers separated by an upright division-wall, said wall being provided'with an internal vertical airflue e and with a series of .lateral openings f on both sides thereof throughout the length of the wall, and a gradually-enlarged combustion-chamber above the upper edge of the wall, all substantially as shown and described.

3. In a boiler-furnace, two fire-chambers separated by a division-wall having lateral air-outlets on both faces, a contracted throat for the two chambers, having lateral air-outlets on its inner face, and acombustion-chamber located above the throat.

4. In a boiler-furnace, two tire-chambers Separated by a division-wall having lateral air-outlets on both faces, a. contracted throat for the two chambers, having air-outlets on its inner face, and a graduallyenlarged combustion-chamber above the throat, all substantially as shown and described.

5. In a boiler-furnace, two fire-chambersl separated by a partition-wall and having a transverse bar G to direct the products into the four ilues thus formed and means for delivering air from three sides of each of the fourilues.

6. In a boilerffurnace, two separated firechambers communicating with a common combustion-,chamber and provided with hollow side and front walls having air-outlets attheir upper (inner) faces and a hollow di vision-wall also having airoutlets on both faces near its upper end.

7. In a boiler-furnace, two separated firechambers communicating with a common combustion-chamber, the inclined hollow side, front, and'back walls provided, respectively,

with the fiuesj ln and outlets lam, and o, and p the. division-wall providedv with iiue e and openings f. v

In witness whereof I hereunto set my hand inthe presence of two witnesses.

EDWIN REYNOLDS.

Witnesses: y

W. M. RUTH,

THEO. N. BROWN. 

